the higher the ration, the greater the rate of diffusion The following experiment was get to demonstrate the water relation of plant cells. Two tubes x + y made it visting XY tubing were filled with different liquids and placed in a beaker containing a certain liquid as in the figure below liquid 3 eaker 20 min was 11 was found that after visking tubing x felt hard and the amount in it had increased. Visking tubing y soft and contained less liquid shown in the figurer a) Explain the observation made in visking tubing X and y as

Which codon is the code for the amino acid histidine (his)?

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h, o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

Natural resources are any materials that humans obtain from the earth to meet our wants and needs.